Pros: ~20 degree difference in temp on two of my hottest drives Airflow and spin direction are marks on the fan already Comes with an adapter Relatively cheap Braided cords

Cons: I can hear when my computer is on again did I mention noisy? I have to disconnect the fan for any audio recording I need to do

Overall Review: It does a good job of cooling two of my hard drives(both Western Digital) that are problematically hot. I appreciate that the airflow direction is marked on the side of the fan for ease of install. The thing that takes away from a five star is the noise factor. I do recording work and in order to keep my mic from picking up how loud the fan is I have to open my case and disconnect the fan.